Collapsible-tube-finishing machine.



F. KNUPFER GOLLAPSIBLE TUBE FINISHING MACHINE.

APPLICATION FILED DEC. 23, 1912.

Patented 00t.28,1913.

4 SHEETS-SHEET 1.

F. KNUPPER.

COLLAPSIBLE TUBE FINISHING MAGHINE.

APPLICATION FILED DEC. 23, 1912.

Patented Oct. 28, 1913.

4 SHEETS-SHEET 2.

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OOLLAPSIBLE TUBE FINISHING MACHINE. APPLICATION FILED DEC. 23, 1912'.

Patented Oct. 28, 1913.

4 SHEETS-SHEET 3.

5 wuv/wilw F. KNUPFER. COLLAPSIBLB TUBE FINISHING MAUHINE.

APPLICATION FILED DEG. 23, 1912.

Patented m. 23, 1913.

4 SHEETS-SHBET 4.

FFI

FRANK KNUPFER, OF DETROIT, MICHIGAN.

COLLAPSIBLE-TUBE-FINISHING MACHINE.

Specification ofiLetters Patent. Patented 061'. 28, 1 913..

Application filed December 23, 1912.

T 0 all whom it may concern:

Be it known that l, FRANK KNUPFER, a citizen of the United States ofAmerica, residing at Detroit, in the county of Wayne and State ofMichigan, have invented certain new and useful Improvements inCollapsible-Tulie-Finishing Machines, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to a scrcw threading machine adapted to finishthenipples of collapsible tubes, such as are commonly used for pigments andpaste of various sorts and includes means whereby the tube is suitablysupported throughout the operation, is rapidly and efliciently operatedupon and is finished without the necessity of remounting. Y

The invention consists in the matters hereinafter set forth and pointedout in the appended claims.

In the drawings :F igure 1 is a view in side elevation partially brokenaway of mechanism that embodies features of the invention; Fig. 2 is aview of the driving end of the machine; Fig. 3 is a view in elevation ofthe other end of the machine; Fig. 1 is a plan View in detail andenlarged of the machine, parts being broken away; Fig. 5 is a view insection on line VV of Fig. 1; Fig. 6 is a view in section on line Vl-Vlof Fig. 1 with parts omitted; Fig. 7 is a view in detail of a tube blankto be operated upon; and Fig. 8 is a sectional view showing the finishednipple of the tube.

A main frame 1 of suitable material and design to combine strength withlightness provides a bearing for a head 2 rotatable of rotation of thehead.

on a horizontal axis in which shafts 3 are independently rotatable, theshafts being disposed in a circle concentric'with the axis Spindles 4:,with appropriate tapered socket connections with the inner end portionsof the shafts 3, project from the head a sullicient distance to bebrought successively into operative relation to trimming and threadingmeans- The spindles -1 have screwthreaded nipples 5 so that when tubeblanks, as indicated at T,

are thrust thereon the rotation of the nipple causes the latter to workits way into a suitable recess or opening in the blank nipple 6 so thatthe latter is thereafter driven by the spindle. A carriage 8 islongitudinally reci n'ocated on a suitable guide portion of Serial No.738,172.

the frame 1 in substantially axial alinement with the head 2 by means ofa friction roller 9 that travels in a cam groove of a suitable cam. 10.The latter is driven by means of a shaft 12 journalcd in the main frame.A tool post 13 on the carriage carries a suitable boring and finishingtool 14 so as to be in axial alinement with each spindle as the latterare brought successively in register therewith. Suitable provision ismade for accurate adjustment of the carriage in the tool post.

Means for threading the nipples of the blanks consists of a pair of diewheels 15 each journaled in the end of a rock arm 16 and driven insimilar directions by means of a gear train indicated at 17. The wheelsare normally held apart by a suitably disposed spring 18 so that thenipple ends of the blanks may pass freely between them. Whenever aspindle is in register with or in proper operative relation to andbetween the wheels 15 and is momentarily arrested by suitable mechanismas herein described, the forward movement of the carriage 8 forces aspreading finger 19 between the end portions of the rock arms 16 andthereby brings the die wheels 15 into rolling contact with a blanknipple. Proper adjustment of the arms as to their relative movement isobtained by suitable screwthreaded stops 20 with check nuts 21, thedriving mechanism and pivotal support of the arms being carried by abracket 22 that is longitudinally movable on the frame for obtainingadjustment in either direction.

A cutting oifdisk 23 on the end of a lever arm 2 is yieldingly pressedby a spring :25 or other like means against the body of the blank on thespindle to trim the same. the arm 2-1 being pivoted on a bracket 26 thatis adjustable longitiulinally of the fran'ie on a suitable guideway 27.A presser roll 28 encounters the blank above the disk and holds itfirmly in position, being yieldingly forced toward the spindle by theaction of the sprin 29 on a bell crank 30 on which the presser roll 98is jourualed. the bell crank being fulcrumed on the cutter disk arm 24.r

A main shaft 31 is journaled in the main frame and is operativelyccimecled as by a belt 32 with a counter shaft 33. A reduc tion geartrain 34 drives the cam shaft 12. A mangled gear 35 on the shaft 12intermittently turns the head 2 by means of a too mangled pinion 36 withwhich it meshes, the point of inaction between the mangled gear andpinion being coincident with the registration of one spindle with thecutting off and trimming tool and the adjacent-spindle with thescrewthreaded and trimming means. Positive stoppage of the head 2 at thedesired point is obtained by means of a detent lever 37 whose outer enddrops into suitably disposed notches 88 in an end plate of the'head, theother end of the detent carrying a friction roll 39 that travels on andis oscillated by a cam 40 on the shaft 12.

The spindles l and their corresponding shafts are conveniently driven bymeans of a belt 42 passing around a pulley 43 on the main shaft 31 andaround counter pulleys L3 on the ends of the respective spindle shafts.During the time that the rotation of the head has carried one of thespindle counter pulleys out of contact with the driving belt 42, thecounter pulley thereon is frictionally rotated by a roll 44 in theopposite direct-ion' to the rotation of. the spindles driven by the belt42, the roll 44; being keyed to a shaft 45' that is connected by a geartrain 46 or the like to a shaft 4:7. The lat: ter is rotated by the belt42 through contact with an idler and tightener 48, a companion 49 to thelatter holding the belt 42 in proper relation to the spindlecounter'pulleys. As a result of this operation the head of the machineintermittently rotates in one direction bringing the spindlessuccessively into registration with the trimming and screw threadingtools and at one point in the revolution of. each spindle reversing thedirection of the rotation of the latter.

In use, a blank as for example the one indicated at 50 in Fig. 4, isthrust on to the spindle at this position and the screw nipple of thespindle causes the tube blank to rotate. This blank is then successivelybrought to the positions indicated by the blank 51 andthe blank 52 inFig. at. \Vhen the blank leaves the last position, the spindle withwhich it is in screwthreaded engagement moves into a position where itis rotated momentarily in a reverse direction so that when the operatorplaces his hand upon the blank and arrests it, the screwthreaded nippleof the spindle runs the blank oif. The operator then withdraws itentirely. free from the machine.

As hercinshown there are four spindles and four positions assumed bythem, first, the one in which the blank is forced into engagement withthe spindle, second, the position where the trimming and boring tool isapplied, third, the position where the screwthreads are spun on to thenipple by the die wheels and the other end of the tube trimmed, andfourth, the position where the reverse rotation of the spindle causesthe blank to be unscrewed from the nipple and leaves the blank clear tobe drawn off by the operator.

The machine is simple in construction and effective in operation and asthe motion is substantially continuous it brings the blanks up to thetools in succession at a speed limited only by the capacity of theperson feeding the machine, and finishes the blank before it leaves themachine.

Obviously, changes in the details of construction may be made withoutdeparting from the spirit ofmy invention and I do not care to limitmyself to any particular form or arrangement of parts.

\Vhat I claim is:

1. A collapsible-tube finishing machine comprising a rotatable head,tube blank receiving members journaled therein each adapted to rotate anapplied blank in one direction and to release such blank when thedirection of rotation is reversed, cutting off, finishing andscrewthreading means with which the receiving members are broughtsuccessively into register, and means for operating the head, themembers and the several means in timed relation adapted to reverse thedirection of each receiving memher once in each revolution of the head.

2. A collapsible-tube finishing machine comprisina main frame, aheadrotatable therein, tu e blank receiving members journaled in the headand adapted to revolve around its center ofmotion,.each member beingadapted to rotate an applied blank in one direction and to release suchblank when the direction of rotation is reversed, means for rotating thereceiving members in the head adapted to reverse the direction of ro-'tation of each receiving member once during each revolution of the head,nipple finishing means, nipple screw threading means and cutting-offmeans with which the receiving members are brought successively intooperative relation during each revolution of the head and mechanism foroperating the parts in timed relation.

3. In a collapsible tube finishing machine, a main frame, a headrotatable therein, tube blank receiving members journaled in the headand adapted to revolve with the head around its center of motion, eachmember being provided with means to rotate an applied blank in onedirection and to release such blank from the member when the directionof rotation is reversed means for rotating the members adapted toreveise the direction of rotation of each member once during eachrevolution of the head, and means for operating the parts in timedrela-. tion.

4. A collapsible-tube finishing machine comprising a main frame, a headrotatable therein, tube-blank receiving members journaled in the headand adapted to revolve therewith around its center of motion,finishrotatable head, tube blank receiving otness ing means,screvvthreading means and cutting oli" means with which each receivingmember is brought successively into operathe relation during eachrevolution oi the head, means for intermittently arresting the head whenthe members are in such operative relation, means tor rotating thereceiving members adapted to reverse the direction of each receivinglnember during one period of arrest in each revolution of the head, andmechanism for operating the several parts in timed relation.

A collapsibletube finishing machine comprising a main frame, a headhorizontally j ournaled therein, tube blank receiving mem bers journaledin the head and adapted to rotate an applied blank in one direction andto release such blank When the direction of rotation is reversed, meansfor rotating the head, means for rotating the receiving members adaptedto reverse the direction of rotation of each once during each revolutionot the head, finishing means reciprocable in the main frame adapted tobe brought into operative relation With the receiving memberssuccessively, screwthreading and cutting ott means on the main framewith Which the receiving members are brought successively into registerduring each revolution of the head, means, tor arresting the headintermittently as the members register With the finishing andscrewthreading means successively and mechanism for operating the partsin timed relation. r

6. In a collapsible tube finishing machine, a rotatable head, tube blankreceiving spindles journaled in the head and adapted to revolve aroundthe latters center of motion, means for periodically arresting the head,means for rotating the spindles adapted to reverse direction of rotationof each spindle at one period of arrest during each revolution ofthe-head, and a series of tube blank finishing means with which thespindles move successively into operative relation, the reversal of eachspindle occurring when the latter is clear of such finishing means 7. Ina collapsible-tube finishing, machine,

spindles journaled in the head and arranged to revolve around thelatters center o't inotion, means for rotating the spindles adapted toreverse the direction of rotation of each once during each revolution ofthe head, each spindle being arranged to retain a tube blank thereon andto release said blankand permit its Withdrawal from the spindle when thelatter is reversely rotated.

8. A. collapsible-tube finishing machine, comprising a main frame, ahead horizontally journaled therein a series of spindles concentric withthe axis of rotation of the head each journalcd therein and eachprovided with a screwthreaded nipple adapted to retain and drive a blank1n one direction and to run a blank oil againstexternal resistance Whenturned in the other d1rect1on, mechanism for rotating the head, andmechanism for rotating the spindles adapted to reverse the direction ofeach spindle once during each revolution of the head.

9. El collapsible-tube finishing machine, comprising a main frame, ahead horizontally journaled therein, a series of spindles concentricwith the axis of rotation of the head each journaled therein and eachprovided With a screvvthreaded nipple adapted to retain and drive ablank in one direction and to run a blank off against externalresistance when turned in the other direction, mechanism for rotatingthe head, mechanism for rotating the spindles adapted to reverse thedirection of each spindle once during; each revolution of thehead, andmeans for intermittently arresting the head at the moment of reversal ofrotation of a spindle,

10. A collapsible-tube finishing machine, comprising a main frame, ahead horizontally journaled therein, a series of spindles concentricWith the axis of rotation of the head each journaled therein and eachprovided With a screwthreaded nipple adapted to retain and drive a blankin one direction and to run a blank oil against external resistance Whenturned in the other direction, mechanism for rotating the head, mechanism for rotating the spindles adapted to reverse the direction of eachspindle once during; each revolution of the head, means forintermittently arresting the head at the moment of reversal of rotationof aspindle, finishing; means reciprocable to and from the head adaptedto be brought into operative relation to a spindle at each moment ofarrest of the head, and screwthreading and cutting off means adapted tobe brought into operative relation with a spindle dur ing each moment ofarrest.

11. A collapsible-tube finishing machine comprising a main frame, arotatable head horizontally journaled therein, tube receiving' spindlesjournaled in the head and adapted to revolve therewith around the latters axis of motion, mechanism for rotating;

the spindles adapted to reverse direction of rotation of each onceduring each revolution of the head, means for momentarily arrestino; thehead at the moment of reversal of rotation of the spindle, finishingmeans reciprocable on the main frame to and from the head, means adaptedto reciprocate the finishing means and to hold the latter in operativerelation to a spindle during the moment of arrest of the head,screwthreading means on the main frame, means for rotatingthescrewthreading means when the latter registers with a spindle, andcutting oil means with which the spindles register successively.

12. A collapsible-tube finishin machine comprising a main frame, a hefdhorizontally journaled therein, tube blank receivin spindles journaledin the head and adapted to revolve around the latters axis of motion,means for rotating the spindles, means for intermittently arresting thehead, finishin means i'eciprocable t0 and from the head withwhich eachspindle is adapted to register during one period of arrest in each revolution of the head, screwthreading means with which each spindle isadapted to register once at a period of arrest during each revolution ofthe head, means controlled by the reciprocating and finishing means forclosing the screwthreading mechanism upon a blank, and cutting off meansoperating upon a blank coincidentally with the screwt-hreading means.

In testimony whereof I afiix my signature in presence of two Witnesses.

FRANK KNUPFER.

lVitnesses ANNA M. Donn, LEWIS E. FLANDERS.

